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Balanced Amplifier Theory, Operations and Applications

A balanced amplifier is the proper term for a pair of devices operated in quadrature phase and combined to amplify a signal. Quadrature simply means that signals incident upon the devices are 90⁰ out-of-phase with one another. The term “quadrature-combined pair” (often shortened to simply “quad-combined pair”) is perhaps just as common as “balanced amplifier,” and both are as identical as “PTFE” is to “Teflon®.”

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  • Wideband Wideband Amplifier, 37 dB Gain, ±2.0 dB Flatness, 50Ω
    • ZVA-02443HPX+, 2 GHz to 43.5 GHz
  • Wideband LNA, 45 dB Gain, 1.7 dB NF, 50Ω
    • ZVA-24443G1X+, 24 GHz to 43.5 GHz


  • LTCC Low Pass Filter, 1W, 1210, 50Ω
    • LFCV-2022+, DC to 20 GHz
  • LTCC Low Pass Filter, 1W, 1210, 50Ω
    • LFCV-2202+, DC to 22 GHz


  • Solid State SP4T Switch, USB control, Daisy Chain up to 25 Devices
    • USB-1SP4T-A673, 100 MHz to 67 GHz

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